For instance 和 For example 的差別在哪裡？如果不好說明，請提供一些例句。

For instance and For example can be used formally or informally, they both generally have the same meaning.
However, For Instance is usually used to describe possible circumstances

"I would like to see a better world. For instance, what would happen if everyone cared about each other?"

while

For example is used to give more details

"Children should wear colorful shirts. For example, red, blue, or green."